arugi wrote:I would like to try the bolded one, with an adjustable front, so that the axles's parallel differenciation can be changed. I'm just curious as to whether I would be able to create a moveable axis and still be able to keep the axis the same throughout the distance in states?
If you have the right tilt (something like 11 degrees I think), you should be able to keep it the same for all distances, with varying angles at the starting dot. However, it is still a good idea to make it adjustable, especially since it is difficult to get it that precise.
Unless you mean that you want to make sure it doesn't change by accident, in which case you just have to make sure the connection or whatever is tight and won't move by itself.